Priming of first- and second-order motion: Mechanisms and neural substrates (original) (raw)

Priming for luminance-modulated (first-order) motion has been shown to rely on the functional integrity of visual area V5/MT . Priming of motion direction and area V5/MT: A test of perceptual memory. Cerebral Cortex, 12, 663-669;. Visual area V5/MT remembers "what" but not "where". Cerebral Cortex, 16, 1766Cortex, 16, -1770. The high retinotopical organization of this area would predict that direction priming is sensitive to spatial position. In order to test this hypothesis, and to see whether a similar priming mechanism also exists with second-order motion, we tested motion direction priming and its interaction with spatial position with both first-and second-order motion. Indeed, whereas a number of studies have pinpointed the specific mechanisms and neural substrates for these two kinds of motion perception that appear to be (partially) non-overlapping (i.e., Lu, Z. L., & Sperling, G. . Three-systems theory of human visual motion perception: Review and update. . First-order and second-order motion: Neurological evidence for neuroanatomically distinct systems. Progress in Brain Research, 144,[197][198][199][200][201][202][203][204][205][206][207][208][209][210][211][212], the mechanisms and neural substrates mediating implicit memory for first-and second-order motion are still unknown.